Thorny Devil Video:
http://video.nationalgeographic.com/video/player/animals/reptiles-animals/lizards/lizard_thornydevil.html

Cobra Vs. Rattlesnake Video:
http://video.nationalgeographic.com/video/player/animals/reptiles-animals/snakes/cobra_eatsratsnake.html
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Article:
http://www.heraldtribune.com/article/20090703/ARTICLE/907031029


Reptiles
  • Characteristics
    • Body Structure
      • Dry skin scales (protection and water conservation)
      • Legs fully under body for mobility
      • Jacobsen's organ
        • Small holes in roof of mouth where tongue is inserted to pick up scents
    • Body Function
      • Lungs for gas exchange
      • Three-chambered heart
      • Ecthotherms (cold-blooded)
    • Reproduction
      • Internal fertilization
      • External development in amniotic egg
        • Several sacs inside a hard shell that nourish the embryo until it hatches
        • Key to reptile success
      • *Main reason for successful transition to land*
  • Reptile Taxonomy
    • Kingdom: Animalia
    • Phylum: Chordata
    • Subphylum: Vertebrata
    • Class: Reptilia
    • Orders: Chelonia, Crocodilia, Squamata
  • Chelonia
    • Turtles
      • Protected by a shell
      • Powerful break and jaws but no teeth
    • Sea turtles have flippers ad migrate to lay eggs on land
    • Tortoises
      • Live completley on land
  • Crocodilia
    • *Have powerful jaws and lay eggs in nests on the ground
    • Crocodiles
      • More time spent in the water
      • Slender snout
    • Alligators
      • More time spent on land
      • Broad Snout
  • Squamata
    • Lizards
      • Monitor lizard and Komodo Dragon are largest
      • Geckos are small, nocturnal; have pads on their feet to walk on walls
      • Poisonous lizards include: Gila Monster and Beaded Lizard
    • Snakes
      • Most numerous of all reptiles
      • No limbs
      • Hinged jaws to swallow prey whole
      • Constrictors (boas, pythons, anacondas)
      • Poisonous (rattlesnakes, cobras, vipers) w/ venom that could destroy blood cells or nervous system
  • Dinosaurs
    • Group of reptiles that went extinct